Gas-controller.



Patented Aug. 15, 1911.

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R. L. AVERY.

GAS CONTROLLER. APPLIoATI'oN FILED AUG. 24, 1910.

COLUMBIA PLANDQRAPH C0.. WASHINGTON. D. C.

.m m m R. L. AVERY.

GAS GoNTRoLLBR.

AAPPLIOATIOH FILED AUG. 24, 1910.

Patented Aug. 15,1911.

2 SHEETS-#SHEET 2.

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COLUMIA PLANOGRAPH C0, WASHINGTON D. C.

ROGER LOCKE AVERY, 0F CHICAGO, ILLINOIS.

GAS-CONTROLLER.

Specification of Letters Patent.

Patented Aug. 15, 1911.

Application filed August 24, 1910. Serial No. 578,684.

To' all whom it may concern:

Be it known that I, ROGER L. AVERY, a citizen of the United States, and a resident of the city of Chicago, county of Cook, and State of Illinois, have invented certain new and useful Improvements in Gras Controllers, of which the following is a specilication.

My invention relates to improvements in cont-rollers for gas burners.

At the present time great waste of gas is occasioned in gas-stoves or ranges through failure in turning olf the gas supplying a gas burner when the latter is not actually in use. For instance, in the course of preparation of a meal it is common practice for the housewife or cook to turn on the gas at the commencement of preparation and to permit it to burn until the completion of preparation, that is, during interchanging of utensils upon the stove in the course of cooking various articles for the meal, time is never l tends along the front side of, the stove and taken to turn olf the gas when a utensil is lifted from heating position thereover and to turn it on again and light it when another is arranged in its place. The loss of time and the inconvenience incident tov resorting to such practice evidently is too great to result in any ultimate economy or benefit.

It is the object of my invention to provide a controller for gas burners which will be of such design and construction as to be adapted, through the medium of the weight of an article or utensil arranged in position for heating over the burner coperating therewith, to be operated soas to permit of the free liow of gas to t-he latter; and upon the removal of the article therefrom to be automatically operated to instantly shut '0H the supply of gas thereto.

A further object is the provision of a controller of the character mentioned which wil-l be' positive and quick-acting in operation and of simple and effectual construction.

Other objects will appear hereinafter.

llVitl-'i these objects in view my inventionconsists in a gas controller characterized as above mentioned and in certain details of construction and arrangement of parts all as will be hereinafter ful-'ly described and particularly pointed out in the appended claims.

My invention will be more readily understood by reference to the accompanying drawings forming a part o-f this speciica- -r tion and in which,

Figure 1 is a simple sectional view of a gas-stove and burner equipped with a controlling device embodying the preferred form of my invention, Fig. 2'A is an enlarged detail central section of a fitting and a lever cooperating therewith included in my invention, Fig. 3 is a section on line 1:*60 of Fig. 2, Fig. 4 is a section on linev g/-y of Fig. 2, Fig. 5 is a section. on linee-.e of Fig. 2, and Fig. 6 is a section on line w-/w of Fig. 1.

Referring now to the drawings 1 indicates a gas-stove or range of any ordinary or pre-l ferred construction, and' 2 the top plate thereof. Arranged in' the hol'e 3 of theV top 2 is the usual utensil supporting web or grate -t upon` which, when the device is used, is arranged the article or utensil to be heated. Centrally arranged below theV opening 3,. the same being supported upon depending hangers 5 secured to the pla-te 2 is a burner 6.

7 indicates the usual manifold whichI exwhich is connected with any suitable source i of fuel supply. The passage 8 leading rearfward'ly from the manifold is governed by a needle valve- 9' which is' threaded in said manifold, the inner end thereof being adapted to fit in a valve ittinglff), in which posi- 'tion thefpassage 8- will'be enti-rely closed.. t 11 indicates a hand piece for operating said valve. rearward side thereof is a fitting' 12 having Threaded into the manifold 7 at the a fuel passage 13 therein communicating with? the passage 8 in said manifold. Leadingl from the passage 13 are smaller passages 14 and 15, the rearward extremity of the latter communicating with a nozzle 16= soldered upon the rearward extremity of' said"l fitting. Said nozzle is of a diameter slightly less than that of the rearward end of said fitting and thev same is provided with l-ateral dis-y ;charge openings 17. Threaded upon. said end of said fitting is acap 18' having a central l discharge opening 19l at its rearward exftremi-ty. Said opening is adaptedl to cooperate with the conically formed rearward extrem-ity of the nozzle 1,6' so that by rotating the capv 18 upon the fitting 12 the flow of gas through the opening19 may be reguilated as desired, the forward extremity of said cap being, as shown, formed for engagement by a wrench or other'tool to facilitate ysuch adjustment.

The^ cap 18 terminates at itsV rearward extremity in a mixing chamber 20 which is constituted within a double conical casing chamber 20 is effected through an opening ,Y

23 provided in the wall 21 thereof, the passage of air through said opening being adapted to be regulated by a conical sleeve 24 rotatably mounted upon the casing 21, said sleeve being provided with an opening 25 adapted to register with the opening 23. The regulation of air to the chamber 20 may evidently be effected by rotatable adjustment of the sleeve 24.

Slidably mounted Yin the upper end portion of the fitting 12 is a needle valve 26 so arranged as to be adapted when in lowered position to close the fuel passage through said tting. Said valve is normally held in lowered position by means of a. compression spring 27 which is arranged within a screw cap or housing 28 threaded upon the upper extremity of said fitting. Formed within said fitting at either side of the valve 26 are parallelly extending openings 29 in which are slidably mounted the upper end port-ions of a U-shaped-member 30. The upper extremities of said member 30 are connected by means of a yoke or bar 30 with the upper extremity of the valve 26 so that the operation of said valve may be effected by sliding operation of the member 30. Y Pivotally secured to the lower extremity of the member 30 is a depending link 31.

Supported centrally in the burner 6 is a disk 32 the same being locked in position therein by means of angular engaging devices 33 carried by said plate and which are adapted to be turned to engage against the under side of said burner as clearly indicated in Fig. 1. Slidably mounted centrally in the disk 32 is a vertically extending rod 34 at the upper extremity of which is carried a rounded head 35 the latter being adapted normally to project up through the grate 4 for engagement and depression by a utensil arranged upon the latter. The lower extremity of the rod 34 is bifurcated for engagement of the bifurcated upper end portion of an extension 36 which is adjustably secured thereto by means of screws 37. Having its upper extremities secured by means of a strap 38 and bolts and nuts 39 to the pipe 22 is aA depending hanger 40.v Pivotally secured to the lower end of the hanger 40 substantially midway its extremities is a lever 41 at the respective endsl of which are slidably adjustable flanged and slotted sections 42 and 43, the latter being secured to the lever 41l in positions of adjustment by means of screws 44. The forward extremity of the section 42 loosely engages a slot 45 provided in the link 31 adjacent its lower extremity,

the outer extremity of the section 43 being pivotally connected as at 46 with the lower extremity o-f the extension 36 of the rod 34.

`With this arrangement it will be seen that an operative connection is established between the utensil operable presser rod 34 and the valve 26 whereby the arrangement of a utensil upon the grate 4 will eEect the Yopening of said valve. Upon removal of the utensil or article from said grate, in which event the rod 34 will be released, said valve will be forced to closingposition and hence said valve will be forced downwardly to closing position and said rod 34 upwardly to initial position by means of the spring 27. Thus fuel will be fed to the burner 6 only when an article or utensil is arranged upon the grate.

Secured upon one side of the fitting 12 is a block 47 the latter being preferably provided with a threaded nipple 48 which is threaded into said fitting. Formed through said block is a fluid passage 49 which communicates with the fluid passage 13 in said fitting. A needle valve 50 threaded intothe block 47 is so arranged as to be adapted to be adjusted to regulate the flow of fuel through the passage 49. To the outer extremity of the passage 49 is connected a pipe 51 which extends rearwardly and terminates at its discharge end adjacent the upper side of the burner 6. Said end 52 terminates in a downwardly extending manner so that grease or dirt will not be readily caught therein to effect clogging thereof. The pipe 51 bears a comparatively fine fluid passage so Vas to adapt the same to support but a pilot light at its discharge end. With this provision the valve 9 being presumed to be open, a pilot light may be constantly burning at the burner so that when fuel is supplied to the latter in the manner before described the same will be lighted so as to be utilized for heating purposes. then at the commencement of the preparation of a meal it is only required to open the ,valve 9 and to light the gas issuing from the discharge extremity of the pipe 51. In the course of the preparation of the meal with` this provision, the burner will be in operation,lthat is, fuel will be f ed thereto and lighted onlywhen an article or utensil is arranged thereon for heating. By forming the presser head 35 of rounded shape as shown and stated, provision is made whereby it isnot required to place an article directly down upon the same in order to operate it but an article may be slid horizontally to position and still operate the same just as eifectually. The rod 34 and the lever 41 are adjustable in their nature, as stated, soas to adapt the device for arrangement upon stoves or in conjunction with burners;

Of various designs and dimensions. The

With a. device of this construction i' link 31 is pivotally connected to the member so that the screwing of the fitting 12 into the manifold 7 will be permitted.

While I have shown what I deem to be the preferable form of my invention I do not wish to be limited thereto as there might be various changes made in the details of construction and arrangement of partsdescribed without departing from the spirit of the appended claims.

Having described my invention what I claim as new and desire to secure by Letters Patent is:

l. The combination of a burner; a mixing chamber; a fuel supplying manifold; a pipe having one end communicating with said burner and its other end communicating with the mixing chamber; a vertically disposed it-ting connecting said manifold and said mixing chamber and having a passage therethrough; a vertically slidable needle valve controlling said passage; a vertically slidable U-shaped member in said litting; a yoke connecting the upper end of the limbs of said U-shaped member with said needle valve; a cap threaded to said fitting and inclosing the upper end of said needle valve and said yoke; a compression spring imprisoned in said cap and arranged to hold said needle Valve yieldingly to its seat; a utensil depressible means arranged at the burner; and an operative lever connected to said depressible means and said U-shaped member, substantially as described.

2. The combination of a burner; a mixing chamber; a fuel supplying manifold; a pipe having one end communicating with said burner and its other end communicating with the mixing chamber; a vertically disposed fitting connecting said manifold and said mixing chamber and having a passage therethrough, the said fitting being threaded in the top of said manifold; a vertically slidable needle valve controlling said passage; a vertically slidable U-shaped member in said fitting; a yoke connecting the upper end of the limbs of said U-shaped member with said needle valve; a cap threaded to said fitting and connecting the upper end of said needle valve and said yoke; a compression spring imprisoned in said cap and arranged to hold said needle valve yieldingly to its seat; a utensil depressible means arranged at the burner; vand an operative lever connected to said depressible means and said U-shaped member, the connection with said Ushaped member con sisting of a link pivot-ally connected with said member and having a slot engaging the end of said lever, substantially as described.

In testimony whereof Idhave signed my name to this specification in the presence of two subscribing witnesses.

ROGER LOCKE AVERY.

Witnesses FLORENCE E. LILLIs; JOSHUA R. H. PoTTs.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. C. 

